Index: uspace/lib/usbdev/include/usb/dev/pipes.h
===================================================================
--- uspace/lib/usbdev/include/usb/dev/pipes.h	(revision 47dfb3497f362f8f497c9fadd4ccdbae23f88c79)
+++ uspace/lib/usbdev/include/usb/dev/pipes.h	(revision a56a13c7b40e6a52751e3e94e14a82368b87728f)
@@ -36,11 +36,11 @@
 
 #include <sys/types.h>
-#include <usb/usb.h>
-#include <usb/dev.h>
-#include <usb/descriptor.h>
 #include <ipc/devman.h>
 #include <ddf/driver.h>
 #include <fibril_synch.h>
 #include <async.h>
+#include <usb/usb.h>
+#include <usb/descriptor.h>
+#include <usb/dev/usb_device_connection.h>
 
 /** Abstraction of a logical connection to USB device endpoint.
Index: uspace/lib/usbdev/include/usb/dev/usb_device_connection.h
===================================================================
--- uspace/lib/usbdev/include/usb/dev/usb_device_connection.h	(revision a56a13c7b40e6a52751e3e94e14a82368b87728f)
+++ uspace/lib/usbdev/include/usb/dev/usb_device_connection.h	(revision a56a13c7b40e6a52751e3e94e14a82368b87728f)
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * Common USB types and functions.
+ */
+#ifndef LIBUSBDEV_DEVICE_CONNECTION_H_
+#define LIBUSBDEV_DEVICE_CONNECTION_H_
+
+#include <errno.h>
+#include <devman.h>
+#include <usb/usb.h>
+#include <usb/hc.h>
+
+
+/** Abstraction of a physical connection to the device.
+ * This type is an abstraction of the USB wire that connects the host and
+ * the function (device).
+ */
+typedef struct {
+	/** Connection to the host controller device is connected to. */
+	usb_hc_connection_t *hc_connection;
+	/** Address of the device. */
+	usb_address_t address;
+} usb_device_connection_t;
+
+static inline int usb_device_connection_initialize(
+    usb_device_connection_t *connection, usb_hc_connection_t *hc_connection,
+    usb_address_t address)
+{
+	assert(connection);
+
+	if (hc_connection == NULL) {
+		return EBADMEM;
+	}
+
+	if ((address < 0) || (address >= USB11_ADDRESS_MAX)) {
+		return EINVAL;
+	}
+
+	connection->hc_connection = hc_connection;
+	connection->address = address;
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Initialize connection to USB device on default address.
+ *
+ * @param dev_connection Device connection structure to be initialized.
+ * @param hc_connection Initialized connection to host controller.
+ * @return Error code.
+ */
+static inline int usb_device_connection_initialize_on_default_address(
+    usb_device_connection_t *connection, usb_hc_connection_t *hc_conn)
+{
+	return usb_device_connection_initialize(connection, hc_conn, 0);
+}
+#endif
+/**
+ * @}
+ */